Shoei 4X S Communication System. Integrated solution. Compatible with Shoei gen 3 helmets (GT-Air 3, NEOTEC 3 and J-Cruise 3, all sold separately). LIVE INTERCOM: All-new auto-reconnect Bluetooth® intercom - For two (2) riders at a range of 800 meters / 0.5 miles. Powerful 40 mm high-definition speakers by JBL, with a specially tuned music processor and three distinctive audio profiles. Over-The-Air Software Updates via the Cardo Connect App, whenever a new version is available. Universal Connectivity: Connects with any other Bluetooth headset of any brand. Automatically adjusts audio volume based on the outside ambient noise. Music streaming directly from smartphone. Fast Charging: Two hours of talk time after a 20-minute charge.